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ratelena [41]
3 years ago
13

which scientist also arranged the elements by increasing atomic mass and used the pattern to predict the existence of elements y

et to be discovered?
Chemistry
1 answer:
Lelechka [254]3 years ago
4 0
Wait hold up yaaa I flex on my ex every time I leave
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Which features are created by groundwater erosion and deposition? Check all that apply. stalagmites sinkholes rills stalactites
Nitella [24]

Answer:

Stalagmites

Sinkholes

Stalacites

Explanation:

These features are created because the ground water dissolves solid rocks and move the solid rocks, dissolve solutions beneath the ground water gradually and therefore enlarging the cracks, which eventually form a cave. Ground water carries minerals which are then deposited and can form stalagmites or stalactites. If a stalactite and stalagmite combine together, they usually form a column.

4 0
3 years ago
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Three moles of oxygen gas is stored in a 2.5-liter container at 35°C. What is the pressure of this gas?
nadezda [96]

Answer:

The pressure of the gas is 30.3072 atm.

Explanation:

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:

P * V = n * R * T

In this case:

  • P= ?
  • V= 2.5 L
  • n= 3 moles
  • R= 0.082 \frac{atm*L}{mol*K}
  • T= 35 C= 308 K (being 0 C= 273 K)

Replacing:

P* 2.5 L= 3 moles* 0.082 \frac{atm*L}{mol*K} *308 K

Solving:

P=\frac{ 3 moles* 0.082 \frac{atm*L}{mol*K} *308 K}{2.5 L}

P= 30.3072 atm

<u><em>The pressure of the gas is 30.3072 atm.</em></u>

4 0
3 years ago
Earthquakes are vibrations of Earth's crust. Which of the following is used to
Likurg_2 [28]
A barometer is the answer
5 0
3 years ago
How does frost form?
hram777 [196]

Answer:

Frost forms when an outside surface cools past the dew point.

Example: The dew point is the point where the air gets so cold, the water vapor in the atmosphere turns into liquid. This liquid freezes. If it gets cold enough, little bits of ice, or frost, form.

3 0
3 years ago
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What is a maze passsage way that Carrys ribosomes and proteins
erastovalidia [21]
Endoplasmic reticulum.

I have biology this semester too :)
5 0
4 years ago
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